EP2518655A2 - Vorrichtung und Verfahren zum Vermeiden von Hypoglykämie - Google Patents

Vorrichtung und Verfahren zum Vermeiden von Hypoglykämie Download PDF

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Publication number
EP2518655A2
EP2518655A2 EP12177881A EP12177881A EP2518655A2 EP 2518655 A2 EP2518655 A2 EP 2518655A2 EP 12177881 A EP12177881 A EP 12177881A EP 12177881 A EP12177881 A EP 12177881A EP 2518655 A2 EP2518655 A2 EP 2518655A2
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Prior art keywords
patient
bbg
tbg
insulin
basal
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Granted
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EP12177881A
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English (en)
French (fr)
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EP2518655A3 (de
EP2518655B1 (de
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designation of the inventor has not yet been filed The
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F Hoffmann La Roche AG
Roche Diabetes Care GmbH
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Medingo Ltd
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Priority to SI200832108T priority Critical patent/SI2518655T1/sl
Priority to PL12177881T priority patent/PL2518655T3/pl
Publication of EP2518655A2 publication Critical patent/EP2518655A2/de
Publication of EP2518655A3 publication Critical patent/EP2518655A3/de
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
    • A61M5/1723—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic using feedback of body parameters, e.g. blood-sugar, pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
    • G16H20/10—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to drugs or medications, e.g. for ensuring correct administration to patients
    • G16H20/17—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to drugs or medications, e.g. for ensuring correct administration to patients delivered via infusion or injection
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
    • G16H50/50—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M2005/14208—Pressure infusion, e.g. using pumps with a programmable infusion control system, characterised by the infusion program
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M2005/14268—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body with a reusable and a disposable component
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
    • A61M5/1723—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic using feedback of body parameters, e.g. blood-sugar, pressure
    • A61M2005/1726—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic using feedback of body parameters, e.g. blood-sugar, pressure the body parameters being measured at, or proximate to, the infusion site
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3546—Range
    • A61M2205/3569—Range sublocal, e.g. between console and disposable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/52—General characteristics of the apparatus with microprocessors or computers with memories providing a history of measured variating parameters of apparatus or patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/20—Blood composition characteristics
    • A61M2230/201—Glucose concentration

Definitions

  • a device and a method for sustained medical infusion of fluids are described. Some aspects of the device and the method relate to a portable insulin infusion device and a method for preventing hypoglycemia. Some aspects relate to an insulin dispensing patch that can monitor bodily glucose levels and a method for preventing hypoglycemia, during a fasting time period, including, for example, a nocturnal time period.
  • Diabetes mellitus is a disease of major global importance, increasing in frequency at almost epidemic rates, such that the worldwide prevalence in 2006 is 170 million people and predicted to at least double over the next 10-15 years. Diabetes is characterized by a chronically raised blood glucose concentration (hyperglycemia), due to a relative or absolute lack of the pancreatic hormone, insulin. Within the healthy pancreas, beta cells, located in the islets of Langerhans, continuously produce and secrete insulin according to the blood glucose levels, maintaining near constant glucose levels in the body.
  • Frequent insulin administration can be done by multiple daily injections (MDI) with syringe or by continuous subcutaneous insulin injection (CSII) with insulin pumps.
  • MDI multiple daily injections
  • CSII continuous subcutaneous insulin injection
  • ambulatory portable insulin infusion pumps have emerged as a superior alternative to multiple daily injections of insulin.
  • These pumps which deliver insulin at a continuous basal rate as well as in bolus volumes, were developed to liberate patients from repeated self-administered injections, and allow greater flexibility in dose administration.
  • Insulin pumps can deliver rapid acting insulin 24 hours a day, for example, through a catheter placed under the skin.
  • the total daily insulin dose can be divided into basal and bolus doses.
  • Basal insulin can be delivered continuously over 24 hours, and can keep the blood glucose levels in normal, desirable range between meals, overnight and during fasting time periods.
  • Diurnal basal rates can be pre-programmed or manually changed according to various daily activities.
  • Insulin bolus doses can be delivered before or after meals to counteract carbohydrates loads or during episodes of high blood glucose concentration levels. For example, the amount of insulin in the administered bolus can depends on several parameters corresponding to a medical state of the patient:
  • hypoglycemia can also pose a major barrier in achieving glycemic targets.
  • asymptomatic nocturnal hypoglycemia can cause clinically important deterioration in glycemic control in patients receiving intensive insulin therapy by causing the Somogyi phenomenon.
  • the Somogyi phenomenon is hyperglycemia induced by a counter-regulatory hormonal response to hypoglycemia ( NEJM 1988; 319: 1233-1239 .).
  • Nocturnal hypoglycemia due to nocturnal hyperinsulinemia, is common in patients with type 1 diabetes and is usually asymptomatic. Nocturnal hyperinsulinemia can occur as a result of the insulin therapy. Although blood glucose levels can often be low during sleep, they are seldom measured routinely. Almost 50% of all episodes of severe hypoglycemia occurs at night during sleep. Such episodes can cause convulsions and coma and have been implicated as a precipitating factor in cardiac arrhythmias resulting in sudden death. Nocturnal hypoglycemia seems to have no immediate detrimental effect on cognitive function; however, on the following day, mood and well-being may be adversely affected.
  • Recurrent exposure to nocturnal hypoglycemia may impair cognitive function; other substantial long-term morbidity includes the development of acquired hypoglycemia syndromes, such as impaired awareness of hypoglycemia ( End Practice 2003; 9 (6):530-543 ).
  • hypoglycemia unawareness e.g. impaired glucagon and attenuated adrenaline responses
  • conditions that are characteristic of diabetes associated neuropathy specifically, autonomic sympathetic neuropathy.
  • Hypoglycemia unawareness can occur when a person does not have the early symptoms of low blood glucose. As a result, the person cannot respond in the early stages, and severe signs of hypoglycemia, such as loss of consciousness or seizures, can be more likely.
  • hypoglycemia associated autonomic failure HAAF
  • symptomatic hypoglycemia itself reduces sympathetic adrenal response (i.e. adrenaline secretion), which subsequently further increases the unawareness of the succeeding hypoglycemic episode.
  • hypoglycemia nocturnal hypoglycemic episodes
  • a device and a method are provided that can be used for prevention of hypoglycemia.
  • the device and a method can dispense insulin.
  • the device and a method can also monitor glucose concentration levels, dispense insulin, and employ a method for preventing hypoglycemia.
  • the device and a method can continuously monitor body glucose levels, simultaneously deliver insulin bolus doses into the body, and employ a method for preventing hypoglycemia.
  • the device can be miniature, discreet, economical for the user and highly cost effective.
  • a method for prevention of hypoglycemia can comprise receiving a target blood glucose (TBG) level corresponding to a desired level of glucose in a patient's body during a fasting time period; receiving a bedtime blood glucose (BBG) level corresponding to the level of glucose in the patient's body substantially at the beginning of the fasting time period; receiving a first set of parameters corresponding to a medical state of the patient; providing the levels of the TBG, BBG and the medical state of the patent to a therapeutic course of action determining means; and, providing means for administering the therapeutic course of action to the patient.
  • TBG target blood glucose
  • BBG bedtime blood glucose
  • the therapeutic course of action includes at least one of the advising the patient to consume a calculated amount of carbohydrates (CC), adjusting the patient's basal rate (BR), advising the patient to adjust the BR, administering a correction bolus (CB), advising the patient to administer the CB.
  • CC calculated amount of carbohydrates
  • BR patient's basal rate
  • CB correction bolus
  • the first set of parameters comprises at least one of the patient's insulin sensitivity (IS), the patient's carbohydrate to insulin ratio (CIR), and the patient's residual insulin (RI), such that the RI corresponds to the level of residual insulin in the patient's body substantially at the beginning of the fasting time period (also referred to as the "bedtime" time period).
  • the "fasting time period” can correspond to any period of time a user spends without food consumption. The fasting time period can begin after the user consumes a meal. Alternatively, the fasting time period can begin at any point in time prior to the next meal consumption.
  • bedtime can refer to the point in time just prior to an individual sleeping as part of a circadian pattern (e.g., a nocturnal time period).
  • the term “bedtime” can also refer to a time immediately prior to a fasting time period (e.g., a time period where calories are not ingested, where the user/patient is either awake or asleep), which can include daytime periods (such time periods lasting generally between 4-12 hours or more).
  • nocturnal "sleeping" time periods for the majority of people, this period of time is at night (but could be during the day), and generally lasts from 5-10 hours.
  • the pump can automatically change the regimen without user interface.
  • a correction bolus is needed or if a decrease in basal insulin is required for optimal bedtime (e.g., a fasting time period) blood glucose measurement, the user is notified and may accept or reject the recommended bolus and basal modifications.
  • bedtime e.g., a fasting time period
  • the method may be applied during the daytime, especially when the user suffers from hypoglycemic unawareness.
  • the hypoglycemia prevention method can be implemented by an insulin infusion device.
  • the hypoglycemia prevention method can be implemented by a glucose monitoring device.
  • the hypoglycemia prevention method can be implemented by a device which can deliver insulin and monitor glucose.
  • the hypoglycemia prevention method can be implemented in an insulin infusion device comprising an insulin dispensing patch unit and a remote control unit, wherein a glucose sensing apparatus (e.g. glucometer) may be integrated in the remote control unit.
  • a glucose sensing apparatus e.g. glucometer
  • the dispensing patch unit may be composed of two parts: a reusable part that contains all electronic and driving elements (i.e. relatively expensive elements) and a disposable part that contains insulin reservoir and other inexpensive elements.
  • the glucose sensing apparatus e.g. glucometer
  • the hypoglycemia prevention method can be implemented by the remote control unit of the insulin infusion device.
  • the nocturnal hypoglycemia prevention method could also be implemented by the reusable part of the dispensing patch unit of the device.
  • the hypoglycemia prevention method can be implemented by the dispensing patch unit that continuously monitors body glucose concentration levels and can simultaneously deliver insulin into the body.
  • the dispensing patch unit may comprise a reusable part and a disposable part.
  • the hypoglycemia prevention method can be implemented by the remote control unit of the device.
  • the method could be implemented by the reusable part of dispensing patch unit of the device.
  • the method could also be implemented by both the reusable part of the dispensing patch unit of the device and the remote control unit of the device.
  • the device can include a miniature skin adherable patch that can continuously dispense insulin, and that employs a method for preventing hypoglycemia can also be provided.
  • the device can comprise a miniature skin adherable patch that can continuously dispense insulin, monitor body glucose concentration levels (e.g. blood glucose, ISF glucose), and employ a method for preventing hypoglycemia.
  • an insulin patch unit can be provided that includes disposable and reusable parts.
  • the reusable part may contain all relatively expensive components and the disposable part may contain inexpensive components, thus providing a low cost product for the user and a highly profitable product for the manufacturer.
  • the insulin patch may employ a method for preventing hypoglycemia.
  • a device can be provided that comprises insulin and a continuous glucose monitor patch unit comprising disposable and reusable parts.
  • the reusable part can contain all relatively expensive components and the disposable part contains inexpensive components, thus providing a low cost product for the user and a highly profitable product for the manufacturer.
  • the device may employ a method for preventing hypoglycemia.
  • Some embodiments provide a device that comprises an insulin infusion patch unit that can be remotely controlled.
  • the insulin infusion patch unit can employ a method for preventing hypoglycemia.
  • the device can also comprise insulin and a continuous glucose monitor patch unit that can be remotely controlled, and that employs a method for preventing hypoglycemia.
  • an insulin infusion pump can also be provided.
  • the insulin infusion pump can employ a method for preventing hypoglycemia during a fasting time period (e.g., a nocturnal time period).
  • the method can take into consideration the bedtime blood glucose levels (e.g., blood glucose levels immediately prior to a fasting time period), the residual insulin at that time, and the user's target bedtime (e.g., fasting time period) glucose levels.
  • Hypoglycemia may be prevented by manipulation of the basal insulin of the pump and/or consumption of a known amount of carbohydrates and/or administration of a correction bolus.
  • a device and a method are provided that can be used for prevention of hypoglycemia.
  • the device can dispense insulin.
  • the device and a method can also monitor glucose concentration levels, dispense insulin, and employ a method for preventing hypoglycemia.
  • the device can continuously monitor body glucose levels, simultaneously deliver insulin bolus doses into the body, and employ a method for preventing hypoglycemia.
  • a method for prevention of hypoglycemia can comprise receiving a target blood glucose (TBG) level corresponding to a desired level of glucose in a patient's body during a fasting time period; receiving a bedtime blood glucose (BBG) level corresponding to the level of glucose in the patient's body substantially at the beginning of the fasting time period; receiving a first set of parameters corresponding to a medical state of the patient; providing the levels of the TBG, BBG and the medical state of the patent to a therapeutic course of action determining means; and, providing means for administering the therapeutic course of action to the patient.
  • TBG target blood glucose
  • BBG bedtime blood glucose
  • the therapeutic course of action includes at least one of the advising the patient to consume a calculated amount of carbohydrates (CC), adjusting the patient's basal rate (BR), advising the patient to adjust the BR, administering a correction bolus (CB), advising the patient to administer the CB.
  • CC calculated amount of carbohydrates
  • BR patient's basal rate
  • CB correction bolus
  • the first set of parameters comprises at least one of the patient's insulin sensitivity (IS), the patient's carbohydrate to insulin ratio (CIR), and the patient's residual insulin (RI), such that the RI corresponds to the level of residual insulin in the patient's body substantially at the beginning of the fasting time period (also referred to as the "bedtime" time period).
  • IS patient's insulin sensitivity
  • CIR carbohydrate to insulin ratio
  • RI patient's residual insulin
  • hypoglycemia prevention can be conducted according to one or more of the following, performed in the order listed below or in any other suitable order:
  • the user also referred to as "patient" can be offered the following choices:
  • a substantially constant basal rate, the magnitude and time of basal rate reduction, when BBG ⁇ TBG and RI ⁇ 0, or BBG>TBG and RI > CB had there been no RI, can be adjusted according to the following computations:
  • the basal rate can be modified by other calculations that reduce the rate by a different magnitude for different time segments.
  • the magnitude of basal rate reduction can be in accordance with a time segment that will provide 1 single unit of insulin. A longer or shorter time segment may be chosen to dictate the magnitude of basal rate reduction.
  • inconstant (variable) basal profiles can also be adjusted in order to prevent hypoglycemia.
  • n y t y * basal y
  • the user may lower his/her basal insulin for the fasting time period and ingest a known amount of carbohydrates.
  • Combined carbohydrate consumption and basal rate reduction may be according to the following computations:
  • the fasting time period (e.g., nocturnal) target blood glucose value or zone (TBG) is somewhat higher than a normal (e.g., daytime) target blood glucose value or zone.
  • the bedtime TBG may optimally be set at 120 mg/dL ( Am. J. Med. 1987 June:82(6) 1127-32 ).
  • a snack containing known amount of carbs of a high glycemic index e.g. a marketed bag of pretzels
  • the glycemic index (GI) is a ranking system for carbohydrates based on their effect on blood glucose levels in the first two hours.
  • the snack should not be a high-fat or high protein food (which take longer to digest and are slower to affect BG).
  • Figure 1 shows a few examples of foods and their GI.
  • FIGS 2a-b show a device (1000) comprising an insulin infusion pump unit (1010), a glucose measurement unit (e.g. glucometer) (90), and a hypoglycemia prevention feature (10).
  • Feature 10 may include any suitable hardware, software, or combination thereof.
  • the insulin infusion pump unit (1010) may comprise a cannula (6) that penetrates the skin (5) to allow delivery of insulin.
  • the hypoglycemia prevention feature (10) is located in the glucose measurement unit (90). In FIG 2(b) , the hypoglycemia prevention feature (10) is located in the insulin infusion pump unit (1010).
  • the insulin infusion pump communicates with a remote control unit allowing programming, user inputs and data acquisition.
  • the hypoglycemia prevention feature may be installed in the remote control unit.
  • the insulin infusion pump contains a glucometer.
  • the glucometer may be installed in the remote control unit of the pump or in the pump unit itself.
  • the hypoglycemia prevention feature may be located in the glucometer, pump unit, or remote control unit.
  • the system comprises an insulin infusion pump, a continuous glucose measurement (CGM) unit, and a hypoglycemia prevention feature.
  • the hypoglycemia prevention feature may be located in either the pump unit or the CGM unit.
  • the insulin infusion pump unit comprises a continuous glucose measurement (CGM) means.
  • CGM continuous glucose measurement
  • the infusion pump and continuous glucose measurement (CGM) means are in the same housing and may communicate with a remote control unit.
  • a hypoglycemia prevention feature may be located in the CGM and pump unit, or in the remote control unit.
  • FIG 3 shows an insulin infusion device (1000) comprising of a patch unit (1010), which can be adhered to the user's skin (5), and a remote control unit (1008), which communicates with the patch unit (1010), allowing programming, user inputs and data acquisition.
  • a patch unit (1010) which can be adhered to the user's skin (5)
  • a remote control unit (1008) which communicates with the patch unit (1010), allowing programming, user inputs and data acquisition.
  • the patch unit (1010) can be composed of one housing (1001) or two housings comprising reusable (1) and disposable (2) parts.
  • the patch unit (1010) can comprise a cannula (6) that penetrates the skin (5) to allow delivery of insulin.
  • the patch unit (1010) can be directly attached to the user's skin by adhesive means (not shown) or can be attached to a dedicated cradle unit (not shown) that is adherable to the user's skin (5) and allows connection and disconnection of the patch unit (1010) as described in the patent application USSN 60/876,679 herein incorporated by reference in its entirety.
  • the remote control unit (1008) may contain the hypoglycemia prevention feature (10) which requires a processor (3010), input means (3020) and display (3030).
  • the input means are required for the hypoglycemia prevention feature (10) and for patch unit (1010) programming.
  • the control unit (1008) may contain additional indication means e.g. audible, vibrational, etc.
  • FIGS 4a-b show another preferred embodiment of the invention in which blood glucose readings, needed for the hypoglycemia prevention feature (10) can be received from a continuous subcutaneous glucose monitor (1006).
  • a communication channel between the continuous subcutaneous glucose monitor (1006) and the hypoglycemia prevention feature (10) residing in the remote control unit (1008) is maintained, allowing programming, data handling, and user inputs.
  • FIG 4a shows an embodiment in which the current blood glucose (BG) is measured by an independent continuous subcutaneous glucose monitor (1006).
  • FIG 4b shows an embodiment in which the continuous subcutaneous glucose sensing (monitoring) apparatus (1006) is integrated within the patch unit (1010) of the insulin delivery device.
  • the insulin dispensing apparatus (1005) and glucose sensing apparatus (1006) constitute a single delivery device, and may use a single cannula (6) for both dispensing and sensing as described in detail in our previous US Application No. 11/706,606 (herein incorporated by reference in its entirety).
  • the sensing apparatus and the dispensing apparatus have separate cannulae that penetrate the skin (5) and reside in the subcutaneous tissue.
  • the delivery device of this embodiment may be comprised of two parts - a reusable part (1) and a disposable part (2), each part has corresponding housing (1001, 1002).
  • FIG 5 shows a block diagram representing some aspects of the algorithm that can be utilized by the hypoglycemia prevention method.
  • the measured bedtime e.g., time prior to a fasting time period
  • BBG blood glucose
  • TBG target blood glucose
  • the residual insulin is quantified, see numeral (104). If there is no residual insulin (RI) in the body from previous boluses, than a correction bolos dose (CB1) should be administered, see numeral (103).
  • the measured blood glucose (BBG) at bedtime e.g., prior to a fasting time period
  • TBG target blood glucose
  • RI residual insulin
  • Combined carbohydrate consumption and basal rate reduction see numeral 118, can be performed as detailed for numeral 117 with the exception that CCx ⁇ CC2 and not CC1.
  • BBG blood glucose
  • TBG target blood glucose
  • RI residual insulin
  • the basal rate can be modified along with carbohydrate consumption, see numeral 119.
  • Basal rate modifications, for a constant or inconstant basal profile, combined with carbohydrate consumption, may be performed as detailed for numeral 117, with the exception that CCx ⁇ CC3 and not CC1.
  • FIG 6 shows a block diagram illustrating some aspects of one example of the hypoglycemia prevention method, in which the measured blood glucose at bedtime is lower than the target BG, there is no residual insulin left in the body from previous boluses (201), and the user's nocturnal basal profile comprises a constant basal rate (1U/h).
  • the patient's constant basal rate, insulin sensitivity (IS), carbohydrate to insulin ratio (CIR) and target blood glucose (TBG) are known, see numeral (200).
  • the patient may either consume a calculated amount of carbohydrates (202) (e.g. 13.5 grams of carbs are needed in the described example), change the basal rate (203), or change the basal rate and consume carbohydrates (204).
  • the basal rate may be modified by numerous calculations that reduce the rate by a different magnitude for different time segments.
  • the magnitude of basal rate reduction is in accordance with a time segment that will provide 1 single unit of insulin.
  • the basal rate may be reduced to 0.1 U/h for one hour to prevent nocturnal hypoglycemia.
  • the user may consume carbohydrates in a smaller amount than calculated in numeral 202 (10g in the example) and reduce the basal rate to a lesser extent than calculated in numeral 203 (0.76U/h), see numeral 204.
  • FIG 7 shows a block diagram illustrating some aspects of another example of the hypoglycemia prevention method, in which the measured blood glucose at bedtime (e.g., prior to a fasting time period) is higher than the target BG and there is residual insulin left in the body from previous boluses (301).
  • the patient's constant basal rate, insulin sensitivity (IS), carbohydrate to insulin ratio (CIR) and target blood glucose (TBG) are known, see numeral (300).
  • the correction factor can be calculated while avoiding the residual insulin, see numeral (302). Since the correction factor can be larger than the residual insulin (in the example: 0.5 ⁇ 1.2), than the patient is recommended to administer a smaller correction bolus (CBs) of insulin.
  • the user should administer, according to the example, only 0.7U of insulin instead of 1.2U.
  • FIG 8a shows an example of a graph representing an inconstant nocturnal basal insulin profile of a user.
  • FIG 8b shows a block diagram representing an example of the nocturnal hypoglycemia prevention method in which the measured blood glucose at bedtime (e.g., prior to a fasting time period) is lower than the target BG and there is no residual insulin left in the body from previous boluses (401).
  • the user's insulin sensitivity (IS), carbohydrate to insulin ratio (CIR) target blood glucose (TBG) and minimal possible basal rate ('min') are known, see numeral (400).
  • the user can change the basal rate according to the following calculations, depicted in numerals 403 and 404: 1.
  • the basal rate can be decreased to minimum (e.g. 0.05U/h) in the first time segment (2 hours) and may be decreased to 1.0 U/h in the second time segment (1h).
  • the user may consume an amount of carbohydrates smaller than that calculated in (402), and decrease the basal rate accordingly.
  • the user may consume 10g of carbs ( ⁇ 13.5) and decrease the basal rate according to the following calculation:
  • the user consumed 10g of carbs and decreased the basal rate from 0.25U/h to 0.13U/h for the first time segment (i.e. 2 hours).
  • FIG 8c shows a block diagram representing an example of the nocturnal carbohydrate prevention method in which the measured blood glucose at bedtime (e.g., prior to a fasting time period) is lower than the target BG and there is 0.9 units of residual insulin left in the body from previous boluses (405).
  • the user's minimal basal rate, insulin sensitivity (IS), carbohydrate to insulin ratio (CIR) and target blood glucose (TBG) are known, see numeral (400).
  • the user can change the basal rate according to the following calculations as depicted in numerals 403 and 404: 1.
  • the basal rate may be diminished to 'min' in the first time segments and may be reduced to 0.1U/h in the second time segment.
  • FIG 9 shows an embodiment of the insulin delivery device, wherein the patch unit (1010) is composed of two parts located in two housings (1001, 1002) - a reusable part (1) and a disposable part (2).
  • the relatively cheap components of the device reside in the disposable part (2) (e.g. cannula (6)) and the relatively expensive components reside in the reusable part (1).
  • the cannula (6) can be attached to a skin adhered cradle unit allowing the connection and disconnection of the patch unit to and from the cradle unit.
  • the device may comprise a remote control unit (2008) with an integrated hypoglycemia prevention feature (10). Programming can be carried out by the remote control or by buttons (not shown) located on the patch unit.
  • FIGS 10a-c show three different embodiments of the device, each contains a glucometer (90) to be used as blood glucose (BG) inputs for the hypoglycemia prevention feature (10).
  • BG blood glucose
  • FIG 10a shows a glucometer (90) located in the remote control unit (1008) of the device.
  • the glucometer (90) comprises an opening (95) for receiving of a test strip (99).
  • the user extracts blood from the body, places a blood drop on the test strip (99) and inserts the strip (99) into the opening (95).
  • the glucose readings are displayed on a screen (80) of the remote control unit (1008).
  • FIG 10b shows a glucometer (90) located in the reusable part (1) of the patch unit (1010).
  • a communication channel (300) between the glucometer (90) residing in the patch unit (1010) and the nocturnal hypoglycemia prevention feature (10) residing in the remote control unit (1008) is maintained, allowing programming, data handling, and user inputs.
  • FIG 10c shows an embodiment in which glucose readings are directly or remotely (90) received from an independent glucometer.
  • FIGS 11a-b show two embodiments of the device with different locations of a hypoglycemia prevention feature (10).
  • the hypoglycemia prevention feature (10) is located in the remote control unit (1008).
  • the hypoglycemia prevention (10) is located in the reusable part (1) of the patch unit (1010).
  • implementations of the subject matter described herein may be realized in digital electronic circuitry, integrated circuitry, specially designed ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof.
  • ASICs application specific integrated circuits
  • These various implementations may include implementation in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.
  • the subject matter described herein may be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user may provide input to the computer.
  • a display device e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor
  • a keyboard and a pointing device e.g., a mouse or a trackball
  • Other kinds of devices may be used to provide for interaction with a user as well; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
  • the subject matter described herein may be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a client computer having a graphical user interface or a Web browser through which a user may interact with an implementation of the subject matter described herein), or any combination of such back-end, middleware, or front-end components.
  • the components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN”), a wide area network (“WAN”), and the Internet.
  • LAN local area network
  • WAN wide area network
  • the Internet the global information network
  • the computing system may include clients and servers.
  • a client and server are generally remote from each other and typically interact through a communication network.
  • the relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

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EP2518655A3 (de) 2013-01-09
EP2171625B1 (de) 2018-10-10
EP2518655B1 (de) 2019-11-20
DK2518655T3 (da) 2020-02-03
DK2171625T3 (en) 2018-11-19
US10350354B2 (en) 2019-07-16
PL2518655T3 (pl) 2020-05-18
SI2518655T1 (sl) 2020-02-28
US20090030398A1 (en) 2009-01-29
ES2767265T3 (es) 2020-06-17
JP2010530279A (ja) 2010-09-09
EP2171625A1 (de) 2010-04-07
WO2009002455A1 (en) 2008-12-31
ES2693432T3 (es) 2018-12-11

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